letsencryptの証明書更新

$ sudo letsencrypt renew
Processing /etc/letsencrypt/renewal/places.lmlab.net.conf
2018-01-11 08:49:13,606:CRITICAL:letsencrypt.auth_handler:Client does not support any combination of challenges that will satisfy the CA.
2018-01-11 08:49:13,606:WARNING:letsencrypt.cli:Attempting to renew cert from /etc/letsencrypt/renewal/foobar.com.conf produced an unexpected error: Client does not support any combination of challenges that will satisfy the CA.. Skipping.